20 across: Pub’s Maria, perhaps, clutches dashing bloke off Darwin (5, 3)
This one made me chuckle. I got this from the direct clue, off Darwin, which I figured must have referred to the Timor Sea. The explanation, though, is clever: pub’s maria, perhaps = tia (as in Tia Maria, the liqueur), dashing bloke = Morse (as in the guy who invented Morse code), giving pub’s maria, perhaps, clutches dashing bloke = timor sea = off Darwin.
21 down: Where to find raspberries stuck? (2, 1, 3)
Nice double-meaning clue which I failed to solve. Where to find raspberries = in a jam = stuck.
Update: Now that I’ve worked out how 15-across works, it too deserves to be here.
15 across: Spooner’s body art forged by 18-down (Simpsons) villain (3, 4)
Everyone loves a Spoonerism and this is yet another one to love. Here, body art = tat, forged = phony so that Spooner’s body art forged = Fat Tony = Simpsons villain.